Can SubmissionResult be a discriminated union?

[BibiFock]

Hello,

I am working on nextJS project with conform & zod.

So when I follow conform example for validation, so I have this kind of action:

export async function action({ request }: ActionArgs) {
  const formData = await request.formData();

  const submission = parseWithZod(formData, {
    schema: MySchema,
  });

  if (submission.status !== 'success') {
    return submission.reply();
  }

  try {
    const result = await signup(data);

    return {
      status: 'success';
      data: result;
    }
  } catch (error) {
    logger.warn('SignUp failed with', error);
    return {
      status: 'error',
      message: 'Sign Up Failed'
    }
  }
}

So my action return type is the discriminated union:

export type ConformActionState<Payload = undefined> =
  | SubmissionResult<string[]>
  | { status: 'error', message: string })
  | { status: 'success'; data: Payload };

But as SubmissionResult have this definition:

export type SubmissionResult<FormError = string[]> = {
    status?: 'error' | 'success';
    intent?: Intent;
    initialValue?: Record<string, unknown> | null;
    fields?: string[];
    error?: Record<string, FormError | null>;
    state?: SubmissionState;
};

As SubmissionResult['status'] can be error, success or undefined, discriminated union not working so fine.

So why do you choose to not split error and success state in submission result?
And if this isn't a particular choice, are you planning to make this type in another way in a near future?

Thanks for your time